{{#invoke:Redirect template|main}}died 3 November 644 CE), was one of the most powerful and influential Muslim caliphs (successors) in history.<ref>Ahmed, Nazeer, Islam in Global History: From the Death of Prophet Muhammad to the First World War, American Institute of Islamic History and Cul, 2001, p. 34. ISBN 0-7388-5963-X.</ref> He was a senior Sahaba of the Islamic prophet Muhammad. He succeeded Abu Bakr (632–634) as the second caliph of the Rashidun Caliphate on 23 August 634. He was an expert Islamic jurist known for his pious and just nature, which earned him the epithetAl-Farooq ("the one who distinguishes between right and wrong"). He is sometimes referred to as Umar I by historians of Islam, since a later Umayyad caliph, Umar II, also bore that name. According to Sunnis, Umar is the second greatest of the Sahaba after Abu Bakr.<ref>{{#invoke:citation/CS1|citation
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